• Title/Summary/Keyword: softwares

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Underwater Acoustic Mavlink Communication for Swarming AUVS

  • Muller, Yukiko;Oshiro, Shiho;Motohara, Takuma;Kinjo, Atsushi;Suzuki, Taisaku;Wada, Tomohisa
    • International Journal of Computer Science & Network Security
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    • v.21 no.4
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    • pp.277-283
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    • 2021
  • The objective of this project is to conduct an underwater survey. The primary goal is to develop a device that can achieve the desired output under test conditions. For this reason, certain practical considerations must be taken into account, and the implementation is then developed to be carried out to obtain stable performance with the available hardware based on that experiment. The experiment was performed via BlueROV2 (Remotely Operated Vehicle) using RaspberryPi and softwares such as QGC (QGroundControl) and ArduPilot. This paper explains the work, the results with the collected data and how we implemented the work is presented in the end. The intention of this experiment is to connect two PCs using RaspberryPi with MAVLink communication using a Commercial-Off-The-Shelf device.

FUZZY TRANSPORTATION PROBLEM WITH ADDITIONAL CONSTRAINT IN DIFFERENT ENVIRONMENTS

  • BUVANESHWARI, T.K.;ANURADHA, D.
    • Journal of applied mathematics & informatics
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    • v.40 no.5_6
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    • pp.933-947
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    • 2022
  • In this research, we presented the type 2 fuzzy transportation problem with additional constraints and solved by our proposed genetic algorithm model, and the results are verified using the softwares, genetic algorithm tool in Matlab and Lingo. The goal of our approach is to minimize the cost in solving a transportation problem with an additional constraint (TPAC) using the genetic algorithm (GA) based type 2 fuzzy parameter. We reduced the type 2 fuzzy set (T2FS) into a type 1 fuzzy set (T1FS) using a critical value-based reduction method (CVRM). Also, we use the centroid method (CM) to obtain the corresponding crisp value for this reduced fuzzy set. To achieve the best solution, GA is applied to TPAC in type 2 fuzzy parameters. A real-life situation is considered to illustrate the method.

Usability Quality Evaluation Plan of DRM Softwares (침입탐지시스템의 사용성 품질평가 모델 개발)

  • Kang, Sang-Won;Lee, Ha-Yong;Yang, Hae-Sool
    • Proceedings of the Korea Information Processing Society Conference
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    • 2010.11a
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    • pp.841-844
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    • 2010
  • 본 연구에서는 침입탐지시스템 제품의 현황을 분석하고 품질평가 기준 및 사용성 품질평가 방법을 개발하고자 한다. 이를 위해 침입탐지시스템(IDS) 제품 유형을 대상으로 특성과 핵심 기술 요소를 분석하고 침입탐지시스템 제품의 구조 및 응용 기술을 분석한다. 그리고 현황 조사 및 분석을 바탕으로 침입탐지시스템 제품의 품질평가 기준과 평가방법론을 개발하였다.

KORNET- THE LATEST PUBLIC PACKET-SWITCHED NETWORK

  • C.K.Un;Cho, D.H.
    • Proceedings of the Korean Institute of Communication Sciences Conference
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    • 1986.04a
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    • pp.119-124
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    • 1986
  • This paper describes the development of the KORNET that may be regarded as the latest public packet-swiched computer communication network. The KORNET project included the development of the network management center (NMC), a network concentrator. For the KORNET we use the virtual circuit(VC) method, a distributed adaptive routing algorithm, and a dynamic buffer management algorithm. The NMC acts as a nerve center of the network, performing such function as network monitoring, subscriber and network management and routing management, etc. As for the NNP and NC hardware, we have implemented them with the 16-bit multitask/multiprocessor technology using MC68000 microprocessors. Softwares have been developed using C language is required for real time processing. All the network protocols we have developed comply completely with the latest CCITT recommendations including X.25, X,3 , X.28 and X.29.

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Variance estimation of a double expanded estimator for two-phase sampling

  • Mingue Park
    • Communications for Statistical Applications and Methods
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    • v.30 no.4
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    • pp.403-410
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    • 2023
  • Two-Phase sampling, which was first introduced by Neyman (1938), has various applications in different forms. Variance estimation for two-phase sampling has been an important research topic because conventional variance estimators used in most softwares are not working. In this paper, we considered a variance estimation for two-phase sampling in which stratified two-stage cluster sampling designs are used in both phases. By defining a conditionally unbiased estimator of an approximate variance estimator, which is calculable when all elements in the first phase sample are observed, we propose an explicit form of variance estimator of the double expanded estimator for a two-phase sample. A small simulation study shows the proposed variance estimator has a negligible bias with small variance. The suggested variance estimator is also applicable to other linear estimators of the population total or mean if appropriate residuals are defined.

Comparison and Examination of the Calculating Hydrological Geographic Parameters Using GIS (GIS를 이용한 수문학적 지형인자 산정에 대한 비교검토)

  • Kim, Kyung-Tak;Choi, Yun-Seok;Lee, Hyo-Jung
    • Journal of Korea Water Resources Association
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    • v.43 no.1
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    • pp.25-39
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    • 2010
  • Recently, GIS softwares such as WMS, ArcHydro, and HyGIS which can calculate hydrological geographic parameters are popularized. These softwares have the functions to calculate various geographic parameters which are used in water resources from DEM (Digital Elevation Model). In this study, hydrological geographic parameters calculated by WMS and ArcHydro are compared and examined with them from HyGIS to evaluate the applicability of the parameters from HyGIS. Bochungcheon (Riv.), Wicheon (Riv.), Pyungchanggang (Riv.), Gyungancheon (Riv.), Naerincheon (Riv.), and Imjingang (Riv.) watersheds are selected for this study, and the shape of watershed, watershed area, watershed slope, the average slope of watershed, main stream length, main stream slope, maximum flow distance, and the slope of maximum flow distance are calculated to compare and examine the characteristics. Study results show that the average relative error of 7 geographic parameters from all the watersheds is 4.77 %, and all the watershed boundaries are very similar. So, all the geographic parameters calculated by each software show very similar value, and the geographic parameters calculated by HyGIS can be applied to water resources with WMS and ArcHydro which have been generally used.

Construction and Service of a Web-based Cyber-learning Platform for the Computational Science and Engineering Community in Korea (국내 계산과학공학 커뮤니티를 위한 웹 기반 사이버-러닝 플랫폼 구축 및 서비스)

  • Suh, Young-Kyoon;Cho, Kum Won
    • Journal of Internet Computing and Services
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    • v.17 no.4
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    • pp.115-125
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    • 2016
  • Recently, many attentions have been paid to conducting convergence research across diverse disciplines. Along with this convergence era, an IT-based multi-disciplinary convergence project, called EDISON (EDucation-research Integrated Simulation On the Net), has been launched to support the studies of researchers engaged in several computational science and engineering (CSE) fields and to boost learning motivations of CSE students. Since 2011, we have been successfully carrying out the EDISON project. EDISON as a cyber-learning platform enables CSE researchers to share their own high-performance computing (HPC) simulation softwares developed to solve their research problems accompanying large-scale computation and I/O and users to run the softwares with little constraints on the web. Also, the EDISON platform has been utilized as lecture material by many universities in Korea. This article introduces the construction and service statistics of this EDISON platform. Specifically, we explicate several distinctions between EDISON and existing other HPC service platforms and discuss a three-layered technical architecture of the EDISON platform. We then present the up-to-date service statistics of EDISON over the past four years. Finally, we conclude this article and describe future plans.

Development of Haplotype Reconstruction System Using Public Resources (공개용 리소스를 활용한 Haplotype 재조합 시스템 개발)

  • Kim, Ki-Bong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.2
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    • pp.720-726
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    • 2010
  • Haplotype-based research has become increasingly important in the field of personalized medicine since the haplotype reflects a set of SNPs (Single Nucleotide Polymorphisms) that are genetically associated and inherited together. Currently, the most widely used application softwares available for haplotype reconstruction, based on in silico method, include PL-EM, Haplotyper, PHASE and HAP. PL-EM, Haplotyper and PHASE are command-line application running on LINUX or Unix system and HAP is a web-based client-server application. This paper deals with an integrated haplotype reconstruction system that have been developed with PL-EM and Haplotyper selected from the accuracy test with experimentally verified data on public application softwares. This integrated system is a kind of client-sever one with user friendly web interface and can provide end-users with a high quality of haplotype analysis. SNPs genotype data with a length of 5 derived from 5 people and SNPs genotype data with a length of 13 derived from 15 people were used to test the analysis results of Haplotyper and PL-EM respectively. As a result, this system has been confirmed to provide the systematic and easy-to-understand analysis results that consist of two main parts, i.e. individual haplotype information and haplotype pool information. In this respect, the integration system will be utilized as a useful tool for the discovery of disease related genes and the development of personalized drugs through facilitating the reconstruction of haplotype maps.

A computer Hardware Selection Strategy for Information Systems Development : A Case of T Coil Service Center (정보시스템 구축시 컴퓨터 하드웨어의 선정전략 - T 철강회사의 시스템 선정 사례 -)

  • Yu, Sang-Jin;Jang, Yeong-Taek
    • Asia pacific journal of information systems
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    • v.3 no.2
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    • pp.3-54
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    • 1993
  • Recently, executives learned of the strategic impact that information systems (IS) and information technology (IT) could provide to their organizations. In other words, through IS/IT companies could squelch competition, secure suppliers, obtain customer loyalty, reduce the threat of new entrants, and identify new opportunities. Because of these potential benefits, organizations are investing ever-increasing amount of organizational resources in IS/IT to make their organizations as information-based ones. Information-based organizations depend largely upon computer hardwares and softwares for their ongoing operations and management. Thus, organizations must manage their information resources, especially hardwares and softwares very effectively to remain competitive. Information resource management (IRI) is a program of activities directed at making effective use of information technology within an organization. These activities cover from corporate IS/IT planning to application system development, implementation, and maintenance. In more detail, IRV activities include planning for and acquiring computer hardwares and communication equipments, planning for, selection, and management of software development projects, and re-engineering business processes as IS/IT are integrated into organizational management. Among these activities, planning for and acquisition of computer hardwares, and planning for and management of software projects are the most critical ones since these activities require enormous amount of such important corporate resources as money, people, and time. Furthermore, corporate's eventual success largely depends upon whether corporate's policy on IS/IT is effective one or not. Numerous approaches and concepts to specific IRM activities have been proposed. However, many organizations have experienced various problems in the process of applying these approaches to their IRM activities mainly because existing methodologies and guidelines are too general to adapt to each firm's unigue situation. Also, these approaches are having its own strengths and weaknesses. Thus, people in charge of organization's IRM policy should come up with effective guidelines to maintain his position very long. In this study, we reviewed some existing approaches for planning, evaluation, and acquisition of computer hardware. Then, real experiences from Taechang Steel Co., Ltd. located in Taegu, which is one of the largest Coil Service Centers in Korea, are discussed. The major purposes of the study are : (1) to discuss the tradeoffs of existing approaches on hardware evaluation and acquisition, (2) to provide a real experience of a company to facilitate the application of theoretical concepts to the real environment.

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Analysis of Inquiry Tendency in 'Problem-Solving Method and Process' Sections in the 2009 Authorized Informatics Textbooks (2009년 검정교과서로 채택된 '정보' 교과서 '문제 해결 방법과 절차' 영역 구성의 탐구적 경향 분석)

  • Kim, Ja-Mee;Yoon, Il-Kyu;Kim, Yong-Cheon;Choi, Ji-Young;Lee, Won-Gyu
    • Journal of The Korean Association of Information Education
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    • v.15 no.2
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    • pp.253-264
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    • 2011
  • The 2007 revised curriculum designated information-related subjects informatics and changed the direction of education by stressing problem-solving skills in consideration of the characteristics of the subject. The purpose of this study was to examine whether the problem-solving method and process sections of informatics textbooks had an inquiry tendency to foster the problem-solving skills of students. Four textbooks that were widely selected from among the authorized textbooks were analyzed by utilizing Romey method. As a result, just one textbook was found to have an inquiry tendency in terms of texts, but every textbook had a sufficient inquiry tendency in terms of activities. But in terms of structure, there were some problems that commercial softwares were utilized and some softwares employed a particular programming language. The findings of the study suggest that no question should be posed about intrinsic inequality in conjunction with textbook selection, and that textbooks should be structured not to make students adversely affected by learning environments.

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